Abstract
A HIGH prevalence rate (41.5%) for head louse infestation has been recorded among rural school-children in Selangor, Malaysia. Distribu tion of the ecto-parasite among the three main ethnic groups (Indians 51.8%, Malays 42%, and Chinese 27.3%) was also studied. The prevalence rate de pended on the length of hair and sex of the person involved.
Treatment with 0.2% and 0.5% Malathion resulted in immediate success rate of 79.2% and 91.5%. Treatment with Carbaryl resulted in an immediate success rate of 100% at dosages of 0.6% and above.
Perigen applied at a dosage of 0.1% gave an immediate success rate of 97.6% whereas kerosene applied undiluted showed a success rate of 87.5%. No side reactions were recorded with any of the insecti cides used, with the exception of kerosene.
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